CN113639082A - Wide-voltage-input proportional solenoid valve control device and proportional solenoid valve - Google Patents
Wide-voltage-input proportional solenoid valve control device and proportional solenoid valve Download PDFInfo
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- CN113639082A CN113639082A CN202110784598.8A CN202110784598A CN113639082A CN 113639082 A CN113639082 A CN 113639082A CN 202110784598 A CN202110784598 A CN 202110784598A CN 113639082 A CN113639082 A CN 113639082A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a proportional solenoid valve control device with wide voltage input and a proportional solenoid valve, belonging to the technical field of proportional solenoid valves, wherein the proportional solenoid valve control device comprises an external terminal which is electrically connected with an anti-reverse diode; the anti-reverse diode is electrically connected with the voltage regulating circuit; the voltage regulating circuit is electrically connected with the P-type MOS tube, and the P-type MOS tube is electrically connected with the PWM driving main circuit. The external terminal is electrically connected with the anti-reverse diode, the anti-reverse diode is electrically connected with the voltage regulating circuit, the voltage regulating circuit is electrically connected with the P-type MOS tube, the P-type MOS tube is electrically connected with the PWM driving main circuit, the voltage regulating circuit controls the turn-on sequence and the duty ratio of the BUCK _ MOS tube and the BOOST _ MOS tube to switch the BUCK _ MOS tube and the BOOST _ MOS tube in a step-up/step-down mode, and further controls the regulation range of the voltage of the driving front end, so that the problem that the voltage of the battery is not matched with the electrical characteristics of the magnet coil can be effectively solved, and the proportional electromagnetic valve has the characteristics of large regulation range, low failure rate and the like.
Description
Technical Field
The invention belongs to the technical field of proportional solenoid valves, and particularly relates to a wide-voltage-input proportional solenoid valve control device and a proportional solenoid valve.
Background
The proportional electromagnetic valve is an element in which a proportional electromagnet in the valve generates corresponding action according to an input voltage signal, so that a valve core of a working valve generates displacement, the size of a valve port is changed, and pressure and flow output in proportion to the input voltage is completed. Spool displacement may also be fed back mechanically, hydraulically or electrically. The proportional electromagnetic valve has the advantages of various forms, easy composition and use of various electric and computer-controlled electro-hydraulic systems, high control precision, flexible installation and use, strong pollution resistance and the like, so the application field is increasingly widened. The plug-in type proportional valve and the proportional multi-way valve which are researched and produced in recent years fully take the use characteristics of engineering machinery into consideration, and have the functions of pilot control, load sensing, pressure compensation and the like. The appearance of the hydraulic control system has important significance for improving the overall technical level of the mobile hydraulic machinery. The method has good application prospect particularly in the aspects of electric control pilot operation, wireless remote control, wired remote control operation and the like. The existing proportional solenoid valve control device of the engineering machinery mostly adopts a PWM (pulse width modulation) driving mode, the adjustment range of the proportional solenoid valve is limited, and the failure rate is high.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a proportional solenoid valve control device with wide voltage input and a proportional solenoid valve, which have the characteristics of large adjustment range, low failure rate and the like of the proportional solenoid valve.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, a proportional solenoid valve control device is provided, comprising an external terminal electrically connected to an anti-reverse diode; the anti-reverse diode is electrically connected with the voltage regulating circuit; the voltage regulating circuit is electrically connected with the P-type MOS tube, and the P-type MOS tube is electrically connected with the PWM driving main circuit.
Furthermore, the external terminal comprises a power input anode and a power input cathode, the power input anode is electrically connected with the node A, and the power input cathode is electrically connected with the node B; and one end of the anti-reverse diode is electrically connected with the node A, and the other end of the anti-reverse diode is electrically connected with the node C.
Further, the voltage regulating circuit is a BUCK _ BOOST circuit, and the BUCK _ BOOST circuit comprises an input filter capacitor, a BUCK _ MOS tube, a BUCK _ BOOST sampling resistor, a BOOST inductor, a BOOST _ MOS tube, a support capacitor and an output voltage sampling resistor; one end of the input filter capacitor is electrically connected with a node C, the other end of the input filter capacitor is electrically connected with a node B, one end of the BUCK _ MOS tube is electrically connected with the node C, the other end of the BUCK _ BOOST sampling resistor is electrically connected with the node D, the other end of the BUCK _ BOOST sampling resistor is electrically connected with the node B, one end of the BOOST inductor is electrically connected with the node D, the other end of the BOOST inductor is electrically connected with the node E, one end of the BOOST _ MOS tube is electrically connected with the node E, the other end of the BOOST _ MOS tube is electrically connected with the node B, one end of the support capacitor is electrically connected with the node F, the other end of the support capacitor is electrically connected with the node B, one end of the output voltage sampling resistor is electrically connected with the node F, and the other end of the output voltage sampling resistor is electrically connected with the node B; two diodes and a capacitor are connected in parallel between the E node and the F node.
Furthermore, one end of the P-type MOS tube is electrically connected with the F node, and the other end of the P-type MOS tube is electrically connected with the G node.
Further, the PWM driving main circuit comprises an MOS _1 tube, a first electromagnet coil, a first current sampling resistor, an MOS _2 tube, a second electromagnet coil and a second current sampling resistor; the MOS _1 tube is connected between a G node and an H1 node, the first electromagnet coil and the first current sampling resistor are connected between an H1 node and a B node after being connected in series, the MOS _2 tube is connected between the G node and an H2 node, and the second electromagnet coil and the second current sampling resistor are connected between an H2 node and the B node after being connected in series.
Further, the anti-surge device also comprises an anti-surge circuit which is electrically connected with the anti-reverse diode.
Further, the surge protection circuit also comprises a BUCK circuit, and the surge protection circuit is electrically connected with the BUCK circuit; the BUCK circuit is electrically connected with the main control circuit and the sampling conditioning circuit respectively.
And one end of the CAN transceiver circuit is connected with the main control circuit, and the other end of the CAN transceiver circuit is connected with a whole vehicle controller outside the device.
The PWM driving circuit further comprises a driving circuit, wherein the input end of the driving circuit is connected with the main control circuit, and the output end of the driving circuit is connected with the PWM driving main circuit.
In a second aspect, there is provided a proportional solenoid valve provided with the proportional solenoid valve control device according to the first aspect.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the external terminal is electrically connected with the anti-reverse diode, the anti-reverse diode is electrically connected with the voltage regulating circuit, the voltage regulating circuit is electrically connected with the P-type MOS tube, the P-type MOS tube is electrically connected with the PWM driving main circuit, the voltage regulating circuit is used for controlling the turn-on sequence and the duty ratio of the BUCK _ MOS tube and the BOOST _ MOS tube, so that the BUCK _ MOS tube and the BOOST _ MOS tube are switched under a step-up/step-down mode, and further the regulation range of the voltage of the driving front end is controlled, the problem that the electrical characteristics of the battery voltage and the magnet coil are not matched can be effectively solved, and the proportional electromagnetic valve has the characteristics of large regulation range, low failure rate and the like;
(2) according to the invention, the optimal value of the driving direct-current voltage can be effectively matched according to the electrical characteristics and the output characteristic requirements of the magnet coil, and the overall control performance of the system is improved; in addition, the direct-current voltage is driven to output a fixed value, so that the calibration and estimation complexity of each key parameter can be reduced, and the engineering implementation is facilitated.
Drawings
FIG. 1 is a system block diagram of a wide voltage input proportional solenoid valve control device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the topology of the main drive circuit of FIG. 1;
fig. 3 is a control flowchart of a wide voltage input proportional solenoid control device according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 to 3, a proportional solenoid valve control device includes an external terminal, an anti-reverse diode, an anti-surge circuit, a P-type MOS transistor, a voltage regulation circuit, a PWM driving main circuit, a BUCK circuit, a sampling and conditioning circuit, a main control circuit, a driving circuit, and a CAN transceiver circuit. The external terminal is electrically connected with the anti-reverse diode; the anti-reverse diode is respectively electrically connected with the voltage regulating circuit and the anti-surge circuit; the voltage regulating circuit is electrically connected with the P-type MOS tube, and the P-type MOS tube is electrically connected with the PWM driving main circuit; the anti-surge circuit is electrically connected with the BUCK circuit, the BUCK circuit is electrically connected with the main control circuit and the sampling conditioning circuit, and the sampling conditioning circuit is electrically connected with the PWM driving main circuit; the main control circuit is electrically connected with the sampling conditioning circuit, the drive circuit and the CAN transceiving circuit, and the drive circuit is electrically connected with the PWM drive main circuit; the CAN transceiver circuit is electrically connected with the external terminal.
In this embodiment, the external terminal includes a power input positive electrode 11 and a power input negative electrode 12, the power input positive electrode 11 is electrically connected to the node a, and the power input negative electrode 12 is electrically connected to the node B; one end of the anti-reverse diode 2 is electrically connected with the node A, and the other end of the anti-reverse diode is electrically connected with the node C. The anti-reverse diode 2 is connected with the power input anode 11, and is mainly used for preventing the device from being damaged due to reverse voltage polarity when the battery end is connected with the device.
The anti-surge circuit is connected to the rear end of the anti-reverse diode, and the device is prevented from being damaged by static electricity or lightning.
The P-type MOS tube is also connected to the rear end of the anti-reverse diode, and is used for driving a power supply switch of the main circuit for the rear end PWM, and the functions of power-on and power-off protection are mainly achieved.
The BUCK circuit is a voltage reduction module, converts the battery terminal voltage into a relatively low control power supply and supplies power to the sampling conditioning circuit, the main control circuit and the CAN transceiving circuit.
One end of the CAN transceiver circuit is connected with the main control circuit, and the other end of the CAN transceiver circuit is connected with a vehicle control unit outside the device and is a communication link between the device and the vehicle control unit.
The input end of the driving circuit is connected with the main control circuit, the output end of the driving circuit is connected with the PWM driving main circuit, and the driving circuit receives a driving instruction of the main control circuit and directly controls a power MOS tube in the PWM driving main circuit.
In this embodiment, the voltage regulating circuit is a BUCK _ BOOST circuit 3, and the BUCK _ BOOST circuit 3 includes an input filter capacitor 31, a BUCK _ MOS transistor 32, a BUCK _ BOOST sampling resistor 33, a BOOST inductor 34, a BOOST _ MOS transistor 35, a support capacitor 36, and an output voltage sampling resistor 37; one end of an input filter capacitor 31 is electrically connected with a node C, the other end of the input filter capacitor is electrically connected with a node B, one end of a BUCK _ MOS tube 32 is electrically connected with the node C, the other end of the BUCK _ BOOST sampling resistor 33 is electrically connected with the node D, the other end of the BUCK _ BOOST sampling resistor is electrically connected with the node B, one end of a BOOST inductor 34 is electrically connected with the node D, the other end of the BOOST inductor is electrically connected with the node E, one end of a BOOST _ MOS tube 35 is electrically connected with the node E, the other end of the BOOST _ MOS tube is electrically connected with the node B, one end of a supporting capacitor 36 is electrically connected with the node F, the other end of the supporting capacitor is electrically connected with the node B, one end of an output voltage sampling resistor 37 is electrically connected with the node F, and the other end of the output voltage sampling resistor is electrically connected with the node B; two diodes and a capacitor are connected in parallel between the E node and the F node.
A capacitor and an inductor are connected in series and then connected in parallel with the BOOST _ MOS transistor 35 between the E node and the B node.
A capacitor and two diodes are connected in parallel and then connected in series with the BUCK _ BOOST sampling resistor 33 between the D node and the B node.
The output voltage in the BUCK _ BOOST circuit is divided by a sampling resistor to be used as the feedback regulation voltage in the BUCK _ BOOST circuit. A power supply adjusting chip in the BUCK _ BOOST circuit timely detects a feedback voltage value, a self-contained PI module is used for timely controlling the output voltage value of the BUCK _ BOOST circuit, the power supply control chip in the BUCK _ BOOST circuit detects that the output voltage feedback value is compared with a given voltage value, the chip is provided with the PI module, the output voltage value is timely adjusted, and then the given voltage value of a PWM driving main circuit is controlled.
The output end supporting capacitor of the BUCK _ BOOST circuit mainly plays a role in output filtering and smoothens output voltage.
One end of the P-type MOS tube 4 is electrically connected with the F node, and the other end is electrically connected with the G node.
The PWM driving main circuit 5 comprises a MOS _1 tube 51, a first electromagnet coil 52, a first current sampling resistor 53, a MOS _2 tube 54, a second electromagnet coil 55 and a second current sampling resistor 56; the MOS _1 transistor 51 is connected between a G node and an H1 node, the first electromagnet coil 52 and the first current sampling resistor 53 are connected in series and then connected between an H1 node and a B node, the MOS _2 transistor 54 is connected between the G node and an H2 node, and the second electromagnet coil 55 and the second current sampling resistor 56 are connected in series and then connected between an H2 node and the B node. The MOS _1 tube 51, the first electromagnet coil 52 and the first current sampling resistor 53 form a forward driving circuit, and the MOS _2 tube 54, the second electromagnet coil 55 and the second current sampling resistor 56 form a reverse driving circuit; the driving states of the two electromagnets can be effectively controlled by controlling the working states of the MOS _1 tube 51 and the MOS _2 tube 54; thereby determining the displacement direction of the spool of the proportional solenoid valve.
As shown in fig. 3, after the battery terminal of the device is powered on, the main control circuit detects the voltage value of the battery terminal, compares the voltage value of the battery terminal with the control target voltage value of the BUCK _ BOOST circuit, if the voltage value of the battery terminal is smaller than the target value, the BUCK _ BOOST circuit works in a BOOST mode, if the voltage value of the BUCK _ BOOST circuit is larger than the target value, the BUCK _ BOOST circuit works in a BUCK mode, and if the voltage value of the BUCK _ BOOST circuit is equal to the target value, the BUCK _ BOOST circuit works in a direct mode, so as to output the target voltage value;
detecting the output voltage value of the BUCK _ BOOST circuit, if the output voltage value is not in the allowable range, normally cutting off the P-type MOS tube, and reporting that the output voltage does not meet the fault; if the current is in a reasonable range, closing the P-type MOS tube;
receiving an instruction through a CAN (controller area network) transceiver circuit, judging the displacement direction of the electromagnetic valve, and if the displacement direction is positive, disconnecting the MOS _2 tube and enabling the MOS _1 tube to enter a PWM (pulse-width modulation) chopping working state to control the current flowing into the first electromagnetic coil; if the current is reverse, the MOS _1 tube is disconnected, the MOS _2 tube enters a PWM chopping working state, and the current flowing into the second electromagnetic coil is controlled.
In the embodiment, the BUCK-BOOST circuit is added at the input end of the battery, and the turn-on sequence and the duty ratio of the BUCK-MOS tube and the BOOST-MOS tube are controlled by detecting the voltage values of the front end and the back end of the BUCK-BOOST circuit, so that the BUCK-MOS tube and the BOOST-MOS tube are switched in a step-up/step-down mode, and the voltage of the front end is controlled and driven. The problem that the applicability is poor due to the fact that the terminal voltage of a battery is directly connected to a PWM module and limited by the terminal voltage of the battery and the effective voltage adjusting range of an electromagnetic coil end is narrow is solved, and the problem that the battery voltage is not matched with the electrical characteristics of a magnet coil can be effectively solved; the problem that when the voltage of the battery terminal is too low, the maximum adjustable output voltage of the PWM module is reduced along with the voltage of the battery terminal, so that the current of the electromagnetic coil is limited, and the dynamic performance of the proportional valve is affected is solved.
In the embodiment, the external terminal is electrically connected with the anti-reverse diode, the anti-reverse diode is electrically connected with the voltage regulating circuit, the voltage regulating circuit is electrically connected with the P-type MOS tube, the P-type MOS tube is electrically connected with the PWM driving main circuit, the voltage regulating circuit is used for controlling the turn-on sequence and the duty ratio of the BUCK _ MOS tube and the BOOST _ MOS tube to switch the BUCK _ MOS tube and the BOOST _ MOS tube under the step-up/step-down mode, so that the regulation range of the voltage of the driving front end is controlled, the problem that the voltage of a battery is not matched with the electrical characteristics of a magnet coil can be effectively solved, and the proportional electromagnetic valve has the characteristics of large regulation range, low failure rate and the like; according to the electrical characteristics and the output characteristic requirements of the magnet coil, the optimal value of the driving direct-current voltage can be effectively matched, and the overall control performance of the system is improved; in addition, the direct-current voltage is driven to output a fixed value, so that the calibration and estimation complexity of each key parameter can be reduced, and the engineering implementation is facilitated.
Example two:
based on the proportional solenoid valve control device according to the first embodiment, the present embodiment provides a proportional solenoid valve that is provided with the proportional solenoid valve control device according to the first embodiment.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A proportional solenoid valve control device is characterized by comprising an external terminal, wherein the external terminal is electrically connected with an anti-reverse diode; the anti-reverse diode is electrically connected with the voltage regulating circuit; the voltage regulating circuit is electrically connected with the P-type MOS tube, and the P-type MOS tube is electrically connected with the PWM driving main circuit.
2. The proportional solenoid control device of claim 1, wherein the external terminal comprises a power input positive electrode and a power input negative electrode, the power input positive electrode is electrically connected to node a, and the power input negative electrode is electrically connected to node B; and one end of the anti-reverse diode is electrically connected with the node A, and the other end of the anti-reverse diode is electrically connected with the node C.
3. The proportional solenoid valve control device of claim 2, wherein the voltage regulator circuit is a BUCK _ BOOST circuit comprising an input filter capacitor, a BUCK _ MOS transistor, a BUCK _ BOOST sampling resistor, a BOOST inductor, a BOOST _ MOS transistor, a support capacitor, and an output voltage sampling resistor;
one end of the input filter capacitor is electrically connected with a node C, the other end of the input filter capacitor is electrically connected with a node B, one end of the BUCK _ MOS tube is electrically connected with the node C, the other end of the BUCK _ BOOST sampling resistor is electrically connected with the node D, the other end of the BUCK _ BOOST sampling resistor is electrically connected with the node B, one end of the BOOST inductor is electrically connected with the node D, the other end of the BOOST inductor is electrically connected with the node E, one end of the BOOST _ MOS tube is electrically connected with the node E, the other end of the BOOST _ MOS tube is electrically connected with the node B, one end of the support capacitor is electrically connected with the node F, the other end of the support capacitor is electrically connected with the node B, one end of the output voltage sampling resistor is electrically connected with the node F, and the other end of the output voltage sampling resistor is electrically connected with the node B; two diodes and a capacitor are connected in parallel between the E node and the F node.
4. The proportional solenoid control device of claim 1, wherein the P-type MOS transistor has one end electrically connected to the F node and the other end electrically connected to the G node.
5. The proportional solenoid control device of claim 1, wherein the PWM driving main circuit comprises a MOS _1 transistor, a first solenoid coil, a first current sampling resistor, a MOS _2 transistor, a second solenoid coil, and a second current sampling resistor; the MOS _1 tube is connected between a G node and an H1 node, the first electromagnet coil and the first current sampling resistor are connected between an H1 node and a B node after being connected in series, the MOS _2 tube is connected between the G node and an H2 node, and the second electromagnet coil and the second current sampling resistor are connected between an H2 node and the B node after being connected in series.
6. The proportional solenoid valve control device of claim 1, further comprising an anti-surge circuit electrically connected to the anti-back diode.
7. The proportional solenoid valve control device of claim 6, further comprising a BUCK circuit, the surge protection circuit being electrically connected to the BUCK circuit; the BUCK circuit is electrically connected with the main control circuit and the sampling conditioning circuit respectively.
8. The proportional solenoid valve control device of claim 7, further comprising a CAN transceiver circuit, wherein one end of the CAN transceiver circuit is connected to the main control circuit, and the other end of the CAN transceiver circuit is connected to a vehicle control unit outside the device.
9. The proportional solenoid valve control device of claim 7, further comprising a driving circuit, wherein an input end of the driving circuit is connected to the main control circuit, and an output end of the driving circuit is connected to the PWM driving main circuit.
10. A proportional solenoid valve provided with the proportional solenoid valve control device according to any one of claims 1 to 9.
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| CN202110784598.8A CN113639082B (en) | 2021-07-12 | 2021-07-12 | Wide voltage input proportional solenoid valve control device and proportional solenoid valve |
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| CN202110784598.8A CN113639082B (en) | 2021-07-12 | 2021-07-12 | Wide voltage input proportional solenoid valve control device and proportional solenoid valve |
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| CN113639082B CN113639082B (en) | 2024-04-12 |
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| CN101701873A (en) * | 2009-11-13 | 2010-05-05 | 武汉理工大学 | Automobile engine tail gas waste-heat and electricity converting stand test device and method for controlling same |
| CN104410316A (en) * | 2014-12-18 | 2015-03-11 | 盐城工学院 | High-frequency link inverter and digital control device thereof |
| RU2636052C1 (en) * | 2016-12-13 | 2017-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Чувашский государственный университет имени И.Н. Ульянова" | Device to control electromagnet of constant voltage |
| CN208134259U (en) * | 2018-02-02 | 2018-11-23 | 深圳市首航通信股份有限公司 | A kind of Novel low power consumption Electromagnetic Control electric appliance of Universal automobile |
| CN112134457A (en) * | 2019-06-24 | 2020-12-25 | 株洲中车时代电气股份有限公司 | Constant current source circuit for realizing PWM (pulse width modulation) based on operational amplifier |
| CN210405094U (en) * | 2019-09-11 | 2020-04-24 | 珠海格力电器股份有限公司 | Bidirectional DC conversion circuit, bidirectional DC converter and electrical equipment |
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